Follow-up to r1198765: fix test failure on windoze.
Follow-up to r1198765: fix test failure on windoze.

* subversion/tests/cmdline/externals_tests.py
  (include_externals): Use proper path separator in EXPECTED_STDOUT.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1198782 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion